Illumination apparatus



Feb. 12, 1935. A 0. MOL. MOSS A ILLUMINATION APPARATUS Filed Aug. 13, 1951 WATNESSES. WMMM R E, O- m V N m w W l violet or infra-red rays.

Patented Feb. 12, I935 PATENT OF FlCE ILLUMINATION'APPABATUS Charles McL. Moss, Lakewood, Ohiorassignor to Westinghouse'Electric & Manufacturing Company, a corporation-of Pennsylvania.

Application August 13,

1931, Serial No. 556,785

6 Claims. (01.240 18) My invention relatesto illuminating apparatus, and particularly to illuminating apparatus providing a combined source of incandescent ilultra 'lumination and invisible radiations, such as Inorder to avoid glaregany high intensity source of light must be enclosed in some difiusing medium or must diffusetheilight by refiec ultra violet and infra-red radiations. and the common reflecting media for diffusing light by 'reflectionyi. e; findirect :1ights.- are extremely poor reflectors of invisible radiation.

It is,.therefore advantageous to separate the source of visible'light fromthe source of invisible radiation, but it is: desirable that these two sources should be mounted in one fixture which should preferably be'of a type which may readily be used for illumination purposes only; or as a combined source ofillumination and invisible radiations. v. Devices have been developed for. producing ultra violet radiation with an output of visible light so low that no glarerexists. either be of low voltages. a l l I r V I It is obviously advantageous to construct a lighting unit for housing the two light sources which may be readily changed from a combined source ofincandescent illumination and invisibleradiation to a source of visible illumination without rewiring or detracting from the general appearance of the unit. Conditions of space utilization may change so that a room in which: it was originally desired to have invisible radiations might be used for some purpose for which such voltage or for ordinary'circuit radiations would be unnecessary or undesirable,

It is another object of .my invention to provide a lighting unit which may bequickly and. easily converted to provide incandescent illumi- These may i utilized in my invention.

be capableof'meeti i -ed shellmember-4 DIOVldEd-Wlllh an outwardly nation or a combination of visible and invisible radiation.

It is another object of my invention to provide a unit combining incandescent and invisible radiations which may be adaptedto many existing incandescent lighting. units. .In the following description and drawing, a; device is describedsuitable for use with a low voltage source of ultra violet radiation which is intended to be operated in series with an ordinary incandescent lamp froma normal house circuit. It will, however, be obvious to'one skilled inthe art that by simple modifications of the device hereinafter described, the incandescent lamp and the ultra violet sourcecould be operated in parallel, or, if desired,, the incandescent lamp could be operated on full voltage and a small transformer of suitable design could be mounted in a suitable locationin the fixture, as for example, immediately above the reflector for the ultra violet unit. The primary of this transformer being connected to the supply circuit by separate leads or supports, and alow. voltage ultra violet source could be operated from the secondary of this transformer. It is also apparent that a source ofinfra-red radiation may be substituted for the ultra-violet source.

Otherobjects and advantages of the invention will become apparent from the following description. and drawing, wherein, I I l Figure lis a view partly in section and" part1 in side elevation. of a lightingunit for use as'a combined source of incandescent and invisible radiations, and l i Fig. 2 is adetailed sectional view of a socket Referring to the drawing for a detailed description of one embodiment of the invention, there is provided ahusk 1 to which is attached a conventional screw-socket 2. 1 Mounted interiorly of the husk and rigidly attached thereto is a screwthreaded shell 3 With which cooperates a thread-- :extending flange 4a. The globe or light diffusing member 5 maybe of the shape showmandis In order to utilize such a lighting fixture as a sourceof both Visible radiation and invisible radiation, it is necessary that the invisible radiation source be disposed outside the light-diffusing globe. I, therefore, provide a unit which may 7 be readily attached to and detached iromthe fixture, and so constructed that the source of visible radiation is inside the globe; and the source of invisible radiation outside the globe.

This unit comprises generally avplug-and-socket, .10 for receiving the incandescent lamp 6 and which fits into the socket 2 of the lighting .fixture, and has suspended therefrom a socket 8 for receiving the ultra-violet or infra-red lamp "7 and supporting the same outside the globe 5.

The plug-a-n'cl socket 10, shown in detail in Fig. 2, comprises a plug 15 'wln'ch screws'into the socket 2, and a female threaded socket member 13 for receiving the incandescent lamp 6. 'A suitable material 16 insulates the male member 15 and the unit is ia'stened together by a bolt 17, the head 18 of acts as the center contact for the lamp 6. The head 18 is insulated from the'female member 13 by insulating pieces 19.

For series connections the elongated bars 11 and 12 are connected to the unit-1'0 as shown at 21 and 22, and make electrical contact with the male or female members 13 and 15. It is understood that these 'res-ilient bars may merely support the ultra violet or infra-red source assembly 23, and that other means may be usedto ener- 'gize the lamps '6 and '7 parallel, series or multiple connections.

To insert the entire-assembly, including the lamps 6 and 7-, in the globe '5, the unit is inserted first through the aperture 25 in the globe 5, and pushed upwardly. The male-member is then screwed into the socket '2. A means for giving turning moment tot-he assembly 10 is to mount the reflector 9 rig-idly in the socket'fi, and then turn the reflector until electrical contact of the male member 1-5 and the socket 2 is made. The reflector 9 will fit snugly against the globe 5, as the bars 11 and 12 are preferably bent so that they will act as a spring and pull the refiector upwardly. Changes in the size of the bars due to expansion when they are heated by theincandescent lamp are also takenup by their resiliency.

It will {be readily seen that, inorder to convert the unit shown in Fig. 1 from a source of comthat I have invented a means for combining sources of incandescent and invisible radiations in an ornamental lighting unit which may be --quic'kly and easily converted to a source of incandescen't illumination only, or v'ice'versa.

Although I haveshown and described a spe cific embodiment of my invention, it is understood that modificatiohsand changes maybe made by those skilled in the' art without departing from the spirit and scope of the appended claims.

I claim as m invention: V

1. A source of combined visible and ultra vioilet radiations comprising, a main socket, an incandescent lamp, a socket therefor, a male plug member attached to said socket to connect said socket to the main socket, a source of ultra violet radiation, means comprising elongated bars of current conducting material for supporting the ultra violet radiation source from the male plug member and for conducting current to the ultra violet source, and a globe supported by the main socket and enclosing the incandescent lamp and the supporting means for the ultra violet source, thereby to provide an enclosed source of visible radiations and an unenclosed source of ultra violet radiations.

. 2, In a lighting unit, in combination, an incandescent lamp, a main socket adapted to be connected to a source of current, a connector unit comprising plug and socket portions for connecting the incandescent lamp to the main socket, a globe having an opening in the bottom thereof and supported by the main socket for enclosing the incandescent lamp, anultra violet lamp, '2. socket therefor, elongated bars 'of current conducting material for supporting the ultra violet lamp and its socket from the connector unit directly beneath the incandescent lamp in such manner that the ultra violet lamp extends through the opening in the globe, said elongated bars being disposed to conduct current to said ultra violet lamp, and means supported byysaid bars adapted tocover the opening in the globe and direct the radiations from the ultra violet lamp. T

3.v In a lighting unit, in combination, an incandescent lamp, a main socket, aslight-difiusing medium supported by the socket and enclosing the incandescent lamp, an ultra-violet "lamp, 'a socket for the ultra-violet lamp, and means disposed to engage the main socket for supponting the socket for the ultra-violet lamp in such rpomeans including spring-like supporting elements forsconnecting thelamps together, bothmechanically and. electrically, said means being adapted to cooperate with the supporting socket to cont nect the lamps to. a source 'oixcurrent :and to retain the incandescent lamp withinthe light.-

.diffusing medium and the ultra violet lamp on the outside thereof.

5. In a lighting unit, in combination, an incandescent lamp, an ultra-violet lamp, ia supporting socket disposed for connection to a source of current, a light-diffusing globe for directing the light radiations from the incandescent lamp and having an opening in the bottom thereof, a socket for -the 'ultr'aviolet lamp, a reflector carried by said socket, "a plurality of resilient members for supporting the socket for the ultraviolet lamp, and means for connecting the in candescent lamp to the supporting socket and i for supporting said lamp within the globe, said resilient supporting members being secured to said connecting means, therebyto function as an electrical connection for the ultra-violet lamp "and to support the ultra-violet lamp, its socket mi and reflector in such manner as to position the ultra-violet lamp on the outside of the globe and to cause the reflector to close the opening in the light radiations from the incandescent lamp, and means including resilient supporting elements for connecting the lamps electrically in series circuit relation to thesupporting socket and for supporting the incandescent lamp within the light-diffusing medium and the ultra violet lamp on the outside thereof.

CHARLES MCL. MOSS. 

